Bethel residents at the annual town meeting on the budget last night voted to send the tax and spending plan to a referendum.  The vote on the $78.4 million proposal will take place on April 11th.  Residents will also be able to decide on borrowing $1 million to replace boilers at the high school.  During the Town Meeting, there were several proposals to reduce the Board of Finance recommended plan.  The reductions, which were not adopted, would have been from the schools, part time employees in the health department and winter road sand supplies.